By their nature, cities are busy places, but there are times when the pace slows, such as late at night or very early in the morning. For this time of day, you will need to be adept at low light photography. That means slow shutter speeds, high ISO settings, and steady camera-holding techniques.
The first thing to remember when taking low light photos is to stop your fully automatic settings from using the flash. You can do this by using the Flash Off mode or the Handheld Night Scene mode. In Flash Off mode, your camera will have to use its capabilities differently to capture pictures without flash. It will do this by increasing the sensitivity to light (ISO speed), reducing the shutter speed and opening the aperture of the lens.
The Flash Off mode is also the one to choose for shooting photos in city museums and venues where flash photography is not allowed or when the flash would spoil the ambience.
Many Canon cameras, such as the Canon EOS RP, have a Handheld Night Scene mode, which takes a quick series of four pictures and then combines the results in one single frame, optimised for minimum camera shake. Since a lot of cities have restrictions about using tripods, the Handheld Night Scene mode can be your path to sharp shots in the city at night.
A wide aperture prime lens such as the Canon RF 50mm F1.8 STM is always good to keep with you and is great for shooting in low light. Small and lightweight, this unobtrusive lens offers sharp image quality. Prime lenses' wide range of aperture settings offer fantastic control over depth of field. To make the most of these lenses, use Aperture Priority mode (Av) and control the depth of field from shallow to deep, or use Shutter Priority mode (Tv) to control how movement is captured. Another characteristic of this kind of lens is that you have to move to get closer to a subject, rather than zooming, meaning you'll often find more interesting angles to shoot from.